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    Solved. I finally heard back from the seller. ...

    Solved.

    I finally heard back from the seller. No wonder I was having difficulty figuring it out. It's a model 244, ROC #11. Very old and none too common. Can't find much literature on it.
    ...
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    Skipped. Magnetic motor starters facilitate...

    Skipped.

    Magnetic motor starters facilitate automatic control and overload protection of motors.

    In lieu of a mag starter, seek out a manual motor starter/protector.
    ...
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    Maybe a model 270? Looks kind of similar and...

    Maybe a model 270?

    Looks kind of similar and shows unloader towers... But again, 8 ribs instead of 6. Weird.

    http://coulsoncompression.com/resources/docs/270NG__50156-104_Feb08_.pdf
    ...
  4. Speaking of dams, anyone taken a look at Hoover...

    Speaking of dams, anyone taken a look at Hoover dam recently? Last I heard it's down to 66% generating capacity. Water level's been declining over the last 20 years.

    ...
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    Quincy pump I.D.

    I'm looking at a listing for what is described as a 10 horsepower Quincy pump for an attractive price. I'm interested in feeding through/supplementing my existing 32 gallon air supply for sand...
  6. Code-minimum residential service in the US is...

    Code-minimum residential service in the US is 100A, 120/240V single phase. Though the service conductors are only required to be sized for 83% of the rating of the main overcurrent protective...
  7. Image is microscopic

    Image is microscopic
  8. A nickel finish would be about what I'm looking...

    A nickel finish would be about what I'm looking for. I know a lot of brass pipe fittings rely on it, but I've never seen it done on aluminum. Is it a reliable finish on such a reactive metal?
  9. A decade or two with occasional use several times...

    A decade or two with occasional use several times a year and periodic maintenance. Minimal pressure/flow. Easy to get to for cleaning/re-coating.



    Tough as nails when dry. Highly reactive if...
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    Plants grew from sunlight. Dinos ate the plants...

    Plants grew from sunlight. Dinos ate the plants (and other dinos). Dinos died and got buried over millions of years. Dead, buried dinos got squeezed and heated until their constituent elements...
  11. Corrosion protection for aluminum exposed to water

    I've got a project I'm working on involving some machined aluminum that will be exposed to water during normal operation. Not positive on the alloy but confident it's nothing exotic. 50xx series or...
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    A valid and very important point to understand. ...

    A valid and very important point to understand.

    The trouble arises from atmospheric interference between the sun and the earth's usable surface. I.e. clouds. Combined with a lack of energy-dense...
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    Even if you did find a way to extract the energy...

    Even if you did find a way to extract the energy stored within a permanent magnet, you'd be using up that stored energy like a primary cell battery. And they don't actually contain all that much...
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    Lies and deception. Strong words for weak minds...

    Lies and deception. Strong words for weak minds (in possession of fat wallets).

    Fake perpetual motion machine aimed at capturing the interest of naive investors/crowd-funders #621548.

    "In this...
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    Emphasis on non-detergent oil for these bearings....

    Emphasis on non-detergent oil for these bearings. Similar to air compressors, these bearings have tranquil low points designed into their sumps to allow particulate and dirt to settle out safely...
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    Rattling in old plain bearing motors like this is...

    Rattling in old plain bearing motors like this is usually caused by insufficient oil in the oil wells or an oil that is too thin. When enough oil of sufficient viscosity is provided, the rings...
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    I'm not positive on the operation of hydraulic...

    I'm not positive on the operation of hydraulic unloaders, but pneumatic unloaders are usually configured pressure-unload, atmosphere-load. Meaning the pilot valve applies tank pressure to the...
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    Looks to me like it's got hydraulic intake...

    Looks to me like it's got hydraulic intake unloaders. Common on pressure lubricated pumps.

    Pump won't load until oil pressure builds - at which point the intake valves will be released and will...
  19. Or better yet; If it ain't broke, don't fix it.

    Or better yet;

    If it ain't broke, don't fix it.
  20. Liquid water boils at room temperature in a hard...

    Liquid water boils at room temperature in a hard vacuum. That is why liquid water does not exist on planets without either an atmosphere or thick crust of ice. Since you have already purged all...
  21. *Hard* vacuum will remove water on paper, yes. ...

    *Hard* vacuum will remove water on paper, yes. Albiet slowly. You will essentially be boiling off 15 gallons of water.

    Whether or not the tire will withstand 30 in-hg without losing it's bead...
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    Pilot duty reed switches in the floats. They...

    Pilot duty reed switches in the floats. They won't handle a contactor coil, period. An 'ice cube' relay interposing between the two, yes. NEMA contactor coils and cores are massive. Big arc when...
  23. Used electric motors are available cheaply via...

    Used electric motors are available cheaply via Craigslist, et. al.
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    Hell, with that kind of power available you could...

    Hell, with that kind of power available you could do a little bit of cheating with some vee-belts to drive a nice big 10-25HP Quincy or Saylor-Beall pump with pilot unloader towers.
    ...
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    A pressure switch could be fitted to shut down...

    A pressure switch could be fitted to shut down the prime mover driving the line shaft in the event of over-pressure, in addition to the usual safety valves. Being interrupted in the middle of a cut...
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